The present study’s three main findings are: (1) sarcopenia and cardiac hypertrophy were not rare in the geriatric population; (2) PTH was significantly associated with Sarc+ LVH+, independently of hypertension and serum calcium and phosphate concentrations; (3) PTH >52.3 ng/l is a biomarker that indicates Sarc+ LVH+. The gene discussed is PTH; the disease is sarcopenia.